Monoclinic M-C vs orthorhombic in 001 and 110 electric-field-cooled Pb(Mg1/3Nb2/3O3)-35%PbTiO3 crystals
Viehland, Dwight D.
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Structural phase transformations in Pb(Mg1/3Nb2/3O3)-35%PbTiO3 crystals with an electric field (E) applied along  and  directions have been performed by x-ray diffraction. In the field-cooling process, a phase transformation sequence of Cubic(C)-> Tetragonal(T)-> Orthorhombic(O) was found for E//; whereas a sequence of C -> T -> monoclinic(M-C) was found for E//. Our results establish that the stability of M-C relative to O (or limiting M-C) is altered by the direction along which E is applied.